Randall John Baier - May 6, 2025 Form 4 Insider Report for MARTEN TRANSPORT LTD (MRTN)

Role: Exec. VP & Chief Tech. Officer
Signature: /s/ James J. Hinnendael, attorney-in-fact
Stock symbol: MRTN
Transactions as of: May 6, 2025
Transactions value $: $0
Form type: 4
Date filed: 5/8/2025, 04:41 PM
Previous filing: Mar 12, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Baier Randall John	Exec. VP & Chief Tech. Officer	C/O MARTEN TRANSPORT, LTD., 129 MARTEN STREET, MONDOVI	/s/ James J. Hinnendael, attorney-in-fact	2025-05-08	0001990433

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MRTN	Common Stock	Award	$0	+4.96K	+35.25%	$0.00	19K	May 6, 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2025.
F2	Includes: (i) 4,957 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 2,986 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 600 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

Content

These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2025.

Includes: (i) 4,957 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 2,986 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 600 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.